Natural radioactivity of the tar-sand deposits of Ondo State, Southwestern Nigeria

Autor: Fasasi, M.K., Oyawale, A.A., Mokobia, C.E., Tchokossa, P., Ajayi, T.R., Balogun, F.A. *
Zdroj: In Nuclear Inst. and Methods in Physics Research, A 1 June 2003 505(1-2):449-453
Databáze: ScienceDirect